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Full-Text Articles in Behavioral Economics
Are Women Really More Risk-Averse Than Men? A Re-Analysis Of The Literature Using Expanded Methods, Julie Nelson
Are Women Really More Risk-Averse Than Men? A Re-Analysis Of The Literature Using Expanded Methods, Julie Nelson
Julie A. Nelson
While a substantial literature in economics and finance has concluded that “women are more risk averse than men,” this conclusion merits investigation. After briefly clarifying the difference between making generalizations about groups, on the one hand, and making valid inferences from samples, on the other, this essay suggests improvements to how economists communicate our research results. Supplementing findings of statistical significance with quantitative measures of both substantive difference (Cohen's d, a measure in common use in non-‐Economics literatures) and of substantive overlap (the Index of Similarity, newly proposed here) adds important nuance to the discussion of sex differences. These measures …
Not-So-Strong Evidence For Gender Differences In Risk, Julie Nelson
Not-So-Strong Evidence For Gender Differences In Risk, Julie Nelson
Julie A. Nelson
In their article "Strong Evidence for Gender Differences in Risk Taking," Gary Charness and Uri Gneezy (2012) review a number of experimental studies regarding investments in risky assets, and claim that these yield strong evidence that females are more risk averse than males. This study replicates and extends their article, demonstrating that its methods are highly problematic. While the methods used would be appropriate for categorical, individual-‐level differences, the data reviewed are not consistent with such a model. Instead, modest differences (at most) exist only at aggregate levels, such as group means. The evidence in favor of gender difference is …
The Power Of Stereotyping And Confirmation Bias To Overwhelm Accurate Assessment: The Case Of Economics, Gender, And Risk Aversion, Julie A. Nelson
The Power Of Stereotyping And Confirmation Bias To Overwhelm Accurate Assessment: The Case Of Economics, Gender, And Risk Aversion, Julie A. Nelson
Julie A. Nelson
Behavioral research has revealed how normal human cognitive processes can tend to lead us astray. But do these affect economic researchers, ourselves? This article explores the consequences of stereotyping and confirmation bias using a sample of published articles from the economics literature on gender and risk aversion. The results demonstrate that the supposedly “robust” claim that “women are more risk averse than men” is far less empirically supported than has been claimed. The questions of how these cognitive biases arise and why they have such power are discussed, and methodological practices that may help to attenuate these biases are outlined.
Ethics And The Economist: What Climate Change Demands Of Us, Julie A. Nelson
Ethics And The Economist: What Climate Change Demands Of Us, Julie A. Nelson
Julie A. Nelson
Climate change is changing not only our physical world, but also our intellectual, social, and moral worlds. We are realizing that our situation is profoundly unsafe, interdependent, and uncertain. What, then, does climate change demand of economists, as human beings and as professionals? A discipline of economics based on Enlightenment notions of mechanism and disembodied rationality is not suited to present problems. This essay suggests three major requirements: first, that we take action; second, that we work together; and third, that we focus on avoiding the worst, rather than obtaining the optimal. The essay concludes with suggestions of specific steps …